Thilakarathna, D.I.V.W.; Kottearachchi, N.S.; Kumararathna, M.J.M.P.; Gimhani, D.R.(Faculty of Agriculture and Plantation Management,Wayamba University of Sri Lanka, Makandura, 2016)
Gimhani, D.R.; Basnayake, B.M.V.S.; Dassanayake, E.M.(Faculty of Agriculture and Plantation Management, Wayamba University of Sri Lanka, Makandura, 2005)
Siriwardhana, S.M.T.T.; Samarasinghe, W.L.G.; Gimhani, D.R.(Faculty of Agriculture and Plantation Management,Wayamba University of Sri Lanka, Makandura, 2016)